solve by Cramer's rule 7x+3y=15; 12y-5x=39
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Step-by-step explanation:
um sorrry i was wrong
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Step-by-step explanation:
5(7x+3y=15
7(-5x+12y=39
35x+15y=75---1st
-35x+84y= 273-----2nd
______________
99y =348
y=348/99
divided by 3
y= 116/33
y =3.5
y =3.5 put in 1st equation
35x+15(3.5)=39
35x+52.5=39
35x = 39-52.5
35x =13.5
x = 13.5/35
x= 0.39
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